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Astronomy with an opera-glass: (1896)

Serviss, Garrett Putman, 1851- [from old catalog] · New York, London, D. Appleton and company · leaf 156

An illustration from Astronomy with an opera-glass:, 1896, leaf 156
viewing it may be.Strings of spots ofevery variety ofshape sometimesextend completelyacross the disk.Our illustration shows the appear- 5$JKSL %_ ance of the sun, as «™frdrawn by the au-thor on the 1st ofSeptember, 1883.Every one of the spots and spot- The Sun? September t lg groups there… … 146 ASTRONOMY WITH AN OPERA-GLASS. cance and their true scale of magnitude. In glancing fromside to side of the suns disk, the eye ranges over a distanceof more than 860,000 miles—not a mere ideal distance, or anexpanse of empty space, but a distance filled by an actualand, so to speak, tangible…

Astronomy

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